Nothing is displayed on screen only dash blinking apart from the boot option.....thanks 4 suggetion,
boot from internal hdd
Nothing is displayed on screen only dash blinking apart from the boot option.....

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I see that you are having issue with your Toshiba and as you mentioned that you are seeing a black screen with a blinking cursor and I believe that it is on the upper left side of the screen.

Having this blinking cursor means that the machine is not booting into the Hard drive, we will check several things on your laptop to find out what is causing this on you laptop.

First as soon as you power your Laptop ON keep on tapping f12 to get to the boot menu, once you see the boot menu screen it will show you a list the first one should be you Hard drive it should say SATA so on ans so fort click on it then press enter this should boot into your Hard Drive but it still you get the blinking cursor then we will need to check the BIOS.

To get into the BIOS from shut down as soon as you power the system on keep on tapping F1 this will show you a Blue screen it may say Phoenix BIOS on the upper left side or center or may be different,

Once in the BIOS screen there will be tabs on top of the screen for options, look for boot check the Boot sequence and change the first boot priority to the Hard drive.

But doing both the instructions above will only work if the Hard drive is detected, by doing F12 for the Boot menu if the Hard drive is not on the list then the Hard Drive will most likely not be in the BIOS as well and this means that th Hard Drive on your system may need replacing.

I believe that this is a far as we can go since there is no other option to do regarding this concern, unless you would know how to open up you Laptop from beneath and re-seat it from it connection, re-seat meaning remove and reconnect.

Have a nice day I hope that I was able to provide details that can help .

Toshiba bios password removal process is meant for use on Toshiba
laptops that you own or have had permission from the rightful owner to
remove the password. If any of these processes are done incorrectly it
may result in complete system failure or permanent system damage (you've
been warned!).

Some Toshiba bios passwords can be reset
using the Key Disk.exe utility, to do this you need a 1.44Mb floppy
disk. Format the disk using Windows and then with a hex editor, change
the first five bytes of the second sector to 4B 45 59 00 00.

Then
put the floppy into your machine and boot it up, you'll be asked for a
password, just press Enter. Then when you're asked to set the password,
type Y then Enter, this will get you into the bios configuration where
you can then type in a new password.

Aside from the KeyDisk, you
can build a parallel Loopback plug, this is a simple device that plugs
into the parallel port of the machine and removes the password when you
boot it up.

To make it you will need a 25 pin DB25 plug, take the
plug apart and join these pins using some old cable;Pins: 1-5-10,
2-11, 3-17, 4-12, 6-16, 7-13, 8-14, 9-15, and 18-25

Plug it into your parallel port and boot up your machine, the password
should be removed as soon as it boots.

Note: This will
work on majority of older Toshiba's (1995 – 2002) and obviously only
ones that have a parallel port.

Something has messed with your MBR, master boot record, which is a small sector at the beginning of your first hard drive which tells the bios which partition to boot. You'll have to use your xp or vista's installation disc to repair the system.( Choose; repair this installation of windows when prompted )While you are in the bios check under the boot section the order of your boot devices. If you have more than 1 HD check that the one containing your OS is first.

Carefull! The 1800 had a notoriously lousy MB/bios problem. While it still works, get yourself to Toshiba support and get the LATEST bios for the right version of your board, and get it IN ASAP...Otherwise you might well end up with a brick..